Although there are many experimental techniques for measuring particle sizes and size distributions, electron microscopy (EM) is still considered as the gold standard in this field, especially, when it comes to particles in the nano range (1 nm – 100 nm). This is the case, because EM cannot only resolve the size of individual particles accurately, but also the particles shape and morphology and can – to a limited extend – also address constituent particles in aggregates and agglomerates.
Johannes Mielke, Pavla Dohányosová, Silvia López and Vasile-Dan Hodoroaba